Apparatus for the manufacture of hollow paper articles.



0. SCHMIDT. APPARATUS FOR THE MANUFACTURE OF I'IOLLOW PAPER ARTICLES.APPLIOATION FILED JUNE 24, 1907.

908, 148., Patented Dec. 29, 1908. T6961. ZSHEETS-SHEETL h & v e,

O. SCHMIDT. APPARATUS FOR THE MANUFACTURE OF HOLLOW PAPER ARTICLES.APPLICATION FILED JUNE 24, 1907.

Patented Dec. 29, 1908.

2 SHEETS-SHEET 2.

UNITED STATES li -ATENT OFFICE.

OSWALD mirror, or BERLIN, GERMANY.

mnarvs roa was namamo'rtmn or aomnw mean aarrcras.

Specification 0! Letters Patent.

Patented Dec. 29, 1908'.

To all whom it may concern: I

Be it known that I, OSWALD SCHMIDT, a subject of theEmperor of Germany,residing at Berlin, Germany, have invented certain new and usefulImprovements in Apparatus for the Manufacture of Hollow Paper Articles,of which the following is a full, clear, and exact specification.

The present invention relates to a machine serving to make paperreceptacles of cylindrical form or of conical form or both combined,cylindrical with a tapering end as will be hereinafter described.

Anendless strip of paper is supplied and fed towards a cylindricalmandrel against which it is pressed by a suitable roller, and paste orglue is supplied by passing the paper strip in well known manner througha trough.

'For the purpose of providing conical ends the mandrel has a conicalextension against which the paper strip is folded by a special deviceWhile the paper is rolled upon the mandrel.

In the accompanying drawing, Figure 1 is a side elevation of the machinepartly in section. Fig. 2 is a plan view'of' the same. Fig. 3 shows inlongitudinal section a cylindrical article with a conical end. F i 4L isa simi-' lar view in section, illustrating how the cylindrical andconical part may be made separately to be connected subsequently. Fig. 5shows in section a conical part separately.

A paper strip a is passed in the well known'manner through a trou hcontaining glue, or other adhesive substance (not shown) and is thenrolled upon a mandrel 6 against which it is pressed by a roll 0. A

For produciii the conical endsof the article, the mandre b is rovidedwith, a prolongation d. Thisv pro ongation is made of metal and maybehollow or solid. It can be attached centrallyto the mandrel b orin linewith-its axis in any convenient manner, for instance by a screwprojecting from the mandrel 12 similar to the screw of the spindle of anordinary lathe.

A segment e of suitable shape is pressed against the part (i and saidsegment is suspended from a lever h, turning in hearings on a shaft g.This segment is connected to the lever referably by means of aball-joint fto turn 1n all directions and that it can act against thesurface of the mandrel d in its entire length at the beginning of therolling,

when the first paper-folds on the mandrel have a smaller diameter aswell as towards the end of the operation when the folds have becomethicker, and the article is larger in diameter.

In order to fold the paper strip which naturally projects in cylindricalshape beyond the projection d regularly and smoothly upon the conicalpart of the mandrel, a device is provided, which consists of a bevelwheel is and of a roll coacting therewith, 2'. The wheel in is journaledin a fork, integral with the lever 71 as shown in Fig. 2, and producesthe folds by pressing the paper strips alternately upon its teeth andinto the recesses between the teeth. The roll 2' is simply a cylindricalrod and may be journaled in regular bearings on the lever It (not shown)or may be lodged in a suitable cavity with springs pressing it againstthe surface of the mandrel d.

Motion is imparted to the wheel I: by a gear wheel Z and by suitablegear wheels m m m, m, m, m and gear wheels 92 on the main shaft. Theroll 2' compresses and smooths the folds made by the wheel 70 in such amanner that the folds paas easily under the segment 6. A wei ht 0 isarranged slidably on the free end 0% the lever arm it so that thepressure of the segment 6 can be regulated. A ratchet wheel is rigidlysecured upon the framecentra 1y to the fulcrum of the lever h, and apawl p swinging on a lateral in of said lever serves to engage the teeth01? the ratchet wheel so that the lever can be raised into any elevatedposition wherein it will be retained by said pawl. It is evident thatwith the apparatus described purely cylindrical rece tacles may beproduced by using a strip 0 paper of a Width equal to the length of thecylindrical mandrel I). Also the conical part may be produced separatelyas shown in Fi 5 ate by using a narrow strip of paper in width extendingover the projection d alone. Such part when ready may be rolled into theend of .a cylindrical receptacle by rolling the wider edge into the samewhile it is produoed upon the mandrel b and this is indicated in Fig. 4where the conical part d is rolled into the cylindrical art a.

When paper is used of t e full width extending over both the'mandrels band d, an article can be produced as shown in Fig. 3 where thecylindrical part a and the conical part b are made integral.

Having thus described my invention,- what I claim is: r 1. Apparatus forthe manufacture of hollow pa er articles, composed of a revolving clindrical mandrel b, of a conical extension adapted to be secured at thefree end face of the mandrel b and to be removed therefrom incombination with means to press the aper projecting beyond the conicalmangrel all into regular folds against the mandrel and with means tosmooth the folds by pressure. 2.- Apparatus for the manufacture ofhollow paper articles composed of a revolving 15 cylindrical mandrel b,of a conical extension eoame d adapted to be secured at the free endface of the mandrel b and to be removed therefrom in combination with abevel wheel is and a roller 2' coacting with the same to press the paperinto folds and in combination with a weighted lever h and a segmentsecured thereto, a ball-joint f at or near a point above the mandrel dcarrying said segment substantially as described and for the purpose setforth.

In testimony whereof I afiix my signature,

OSWALD SCHMIDT. In the presence of-- WOLDEMAR HAUPT, HENRY HAsPER.

